A try playing with organic-looking procedural materials/textures in substance. This is a Wip, still missing some layers, custom roughness, etc. My plan it to make it a Smart Material to Substance and be able to paint blisters to blend this into characters skins. The small blisters surround the bigger ones and everything is driven by a perlin noise, so the entire skin/blisters change and move around if i change some parameters. This help with the organic look.
I will work more on that material soon. And update that post with better examples. But it's already gross enough to post. lol.